{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["RNA", "protein", "cell type", "cell line", "DNA"], "input": "In this report, we demonstrate that a novel Ets-related transcription factor , Elf-1 , binds specifically to two purine-rich motifs in the HIV-2 enhancer ."}
{"RNA": [], "protein": ["Ets-related transcription factor", "Elf-1"], "cell type": [], "cell line": [], "DNA": ["two purine-rich motifs", "HIV-2 enhancer"]}